Calling device.



H. 0. RUGH. CALLING DEVICE. APPLICATION FILED SEPT. 1,1910.

Patented Oct. 20, 1914.

4 SHEETSSHEET 1.

THE NORRIS PETERS Coy. PHOTO-LITHQ, WASHING TON, D. C

H. 0. RUGH.

CALLING DEVICE.

APPLIOATION FILED SEPT. 1,1910.

Patented Oct. 20, 1914.

4 SHEET S-SHEET 2.

APPLIGATION FILED SEPT.1,1910.

H. 0. RUGH.

CALLING DEVICE.

Patented Oct. 20, 1914.

4 SHEETS-SHEET 3.

alilmillw" N W MINIM fZz/enZZr H. O. RUGH.

CALLING DEVICE. APPLICATION FILED SEP'T.1,1910.

Patented Oct. 20, 1914.

4 SHEETS-SHEET 4.

M7132? flzavy 0.2325970 UNITED STATES PATENT OFFICE. HARRY 0. HUGE, 0F SANDWICH, ILLINOIS, ASSIGNOR, BY MZElSNE ASSIGNMENTS, TC

HALL SWITCH 8t SIGNAL COMPANY, A CORPORATION OF CALLING DEVICE.

Specification of Letters Patent.

Patented Oct. 20, 1914;.

Application filed September 1, 1910. Serial No. 580,068.

To all whom it may concern:

Be it known that I, HARRY 0. HUGE, a citizen of the United States residing at Sandwich, in the county of Dekalb and State of Illinois, have invented a certain new and useful Improvement in Calling Devices, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

My invention relates to calling devices and has for its object the provision of a novel calling device for selective signaling circuits. I One of the features of the invention consists in the provision of means where predetermined station and the said element.

may be thereafter successively operated to send calls for succeeding stations, without releasing the substation mechanisms between calls. connection with step-by-step devices.

In my application Serial No. 574,584,,

filed July 29, 1910, I set forth a substation circuit also illustrated herein in which I use restoring means at each step-by-step element, which restoring means shown comprise a controlling magnet, the function of the controlling magnet being to set a looking pawl into the step-bystep element during the signaling operation, but to release the locking pawl therefrom after the call has been sent to thereby permit restoration of the elements to their normal position. It is of advantage to have these restoring means operative, if possible, before the signal sending device begins its step-by-step action and my invention herein contemplates means whereby the calling device during its setting operation, that is during the time that it is being placed into position to begin its impulse sending operations, operatively actuates the said controlling magnet or more broadly speaking the restoring means to place the substation devices in condition to be operated immediately the calling device begins its substation calling operations. The means herein specifically illustrated which produce these results comprise an impulse sending relay under the control of an impulse sending ele ment of the signal sending device and This feature is of specialutility in tail by reference to the accompanying drawings illustrating one embodiment thereof in switching apparatus whereby the relay is energized 'as the step-by-step element is moved in one direction to thereby send a long impulse over the line to. operatively actuatethe release controlling magnet so that when the impulse element at the sending station is released to send its impulses, the release controlling substation magnet has already placed the substation element in condition for operative forward movement immediately the impulses begin. The inven tion also contemplates novel circuit changing mechanism to effect this result. The invention also contemplates novel means wherebythe signal sending call box is placed upon a supporting plate and mating members associated therewith for effecting electrical contact so that a temporary defective callbox may be removed and another one inserted in place thereof without the necessity of elaborate or lengthy circuit connec-f tions.

I w1ll describe my invention more in de Fig. 4 is a diagrammatic view of the circuit;

Fig. 5 is a view similar to Fig. 3 showing the use of the instrument for calling succeeding stations; Fig. 6 is an end view of the call sending mechanism; Fig. 7 is a diagrammatic view of the type of substation apparatus which can be used in connection with my invention, and: Fig. Sis a detail of one of the magnets used at the substation apparatus.

Like characters of reference indicate like parts. throughout the different figures.

Referring more particularly to Figs. 1 and 2, I show acall box 1 having a cover 2, which cover carries a dial 3 used for signal sending purposes and under the control of a handle or finger hold t. The dial 3 is provided with a plurality of apertures 5 depending upon the number ofstations to be used in connection with the system. The finger hold 4; includes a knob'6 which is movable circumferentially so that a pin 7 pro- ,vided upon the extremity of the knob may be inserted in any aperture 5 and the dial then set to call the particular station desired.

The call box 1 is mounted upon a base 8 of insulating material, which base in the instance shown, has two plugs 9, 9 fastened thereto and in direct connection with the circuit over which the impulses are to be sent, two wires being all that are needed for connection with the call box. The call box itself has two sockets or jacks 10 mating or interlocking with the plugs 9 so that the call box may be set in place upon the supporting plate 8' and the plugs engage the jacks to make electrical connection with the interior of the call box through the agency of the springs 11, 11. Two binding posts 12 are also provided in case connection is desired to be made other than through the use of the plug and jack arrangement aforesaid.

In Fig. 2 the supportingplate 8 is shown in dotted lines to indicate that the call box is removable therefrom as desired and in the manner indicated. The two outside connections from the jacks preferably extend direct'to the hinges 13, 13 and from them into the call box and to the mechanism as will be more clearly explained.

The dial is fastened to a shaft 14 which projects through the cover 2 and upon which an impulse element 15 is secured by means of the set screw 16. The impulse element is provided with teeth 17 in accordance with the number of stations for which the line is designed and has one elongated tooth 18 which is used finally to prolong the connection of signal sending current through the line Wires after the proper station has been called, thereby to operate the substation signal.

It will be understood that I am describing herein specifically a form of carrying out my invention, not with any idea however that I amthereby indicating that my invention does not include a great many other forms in which it may be carried out.

The impulse element together with the dial after beingset in a clockwise direction, referring to Fig.1, are moved in a contraclockwise' direction to send the required impulses through the agency of a clockwork the details of which it is not thought necessary to explain, which clockwork however includes a' spring 19, the governor 20 and suitable gear wheels 21 and 22 so that when the dial is moved in a clockwise direction the spring is wound up and returns the shaft 14: with its associated mechanism to the starting point. The impulse element 15 is in association with a spring 23, which spring is engaged by the teeth 17 and the elongated tooth 18, but is not inengagement with the element 15 except when in contact with such-teeth aforesaid. Ihe spring 23 teeth 17 or tooth 18.

is connected to the lower hinge 13 and the framework of the machine including the impulse element 15 is connected to the upper hinge 13. A frictional element 21- shown more clearly in side view in Fig. (3 is mounted upon the end of a spring 25 and. carries frictional means such as rubber or leather 26. The spring 25 is adapted for engagement with either a spring 27 or a spring 28. When the impulse wheel 15, referring to Fig. 3, rotates in a clockwise direction it carries the frictional element along as said frictional element bears against said impulse element and thus connects springs 25 and 27 together, whereas when the impulse mechanism is moved in the opposite direction it brings springs 25 and 28 together. Spring 28 is directly connected to the lower hinge 13 and spring 25 to the frame of the machine so that when springs 25 and 28 are together, the same circuit conditions are established as when spring 2.- engages the This will be clear from Fig. 4; where the two wires 29 and. 30 which lead out of the call box through the plugs 10, 10 are shown as connected to a battery 31 serially with a relay 32. When the spring 23 touches the teeth of the inn pulse element 15 the relay is drawn up to attract its armature 33 to send impulses over the line wires 31 and 35 through the agency of the battery 36, these impulses corresponding to the impulses established 'by the engagement of the spring 23 with the teeth 17 or 18. Referring to Figs. 3 and 4; the impulse element, while the dial is being set to a position from which it begins its call sending operations, is moved in con junction with said dial in a contra-clockwise direction or in the direction of the arrow as Figs. 3 and 1- are rear views with respect to Fig. 1. During this time, while the dial and impulse element are thus being set, springs 25 and 28 are in engagement and the relay 32 ispermanently pulled up which sends a long impulse over the line wires 31 and 35 to thereby place the restoring or release controlling magnets at the substations in their operative positions, whereby a locking pawl is thrown into engagement with the teeth of the substation step-bystep elements. The substation step-by-step elements are then in condition to be immediately responsive to impulses from the inipul'se element 15 when it begins its reverse movement under the influence of the spring 19. Immediately upon starting the reverse movement the frictional element 24: opens the contact between springs 25 and 28 and causes contact to be made between springs 25 and 27, spring 27 in this instance serving merely as a holding spring.

It will thus be seen that as the dial is being set, a shunt circuit is placed about the circuit changing elements 23 and 15 so that the movement ofthe teeth against the spring 23 does not influence the magnet 32, but immediately upon the beginning of the reverse movement of the dial, the magnet 32 is responsive to contact between the spring. 23 and the teeth 17 and 18. It will ,thus be seen that the initial impulse to place the substation apparatus in condition to receive a signal is made while setting the apparatus and not while the dial is making its automatic signal sending movement. To fully understand this reference is had to Fig. 7 where the line wires 34 and 35 are shown as uniting three substations A, Band C, at each of which substations there is a restoring or controlling magnet 37, shown more in detail in Fig. 8, which controlling magnet has an energizing winding consisting of the coils 38 and a periodically short circuited sec ondary winding consisting of the coils'39 which control the armature 40 against the operation of a spring 41. The armature 40 is normally rapidly responsive to the establishment of current in the coils 38, butwhen the armature has once been drawn up it engages the contact 42 thereby establishing a short circuited secondary winding on the cores of said magnet so that the armature having once been drawn up, the magnet is slow acting and will not release its armature during momentaryinterruptions of the current in the coils 38 but will only release its armature 40 after the current has been discontinued a given length of time.

The magnet 37 controls a locking pawl 43 which is thrown into engagement with the teeth of the step-by-step element 44 when the long impulse is received over the line wires 34 and 35 while the dial at the call box is being moved to its initial signal sending position. Thereafter the impulsessent from the calling station are so rapid-as not to influence the magnet 37, but they do infiuence the magnet 45 which, through the agency of its pawl 46, steps up the element 44 to establish contact between the elements 47 and 48 of the particular station desired; After the impulse element 15 in its return movement has sent the required impulses to call a predetermined station, the spring 23 engages the elongated tooth 18 which thereupon keepsboth magnets 45 and 37 energized to maintain contact between the elements 47 and 48 a given length of time sui'licient to permit battery 49 to operate the local signal 50. After this, the spring 23 leaves the tooth 18 and being no longer in contact with any portion of the impulse element 15, current is discontinued over the line wires 34 and 35 and after a discontinuance of such current for a brief interval, armature 40 of the magnet 37 is released, thereby permitting the withdrawal of pawls 43 and 46 from the step-by step element 44 and permitting the spring 51 to restore said station 0.

element to their normal positions against the stop 52. i a

My invention further contemplates means whereby after one station is called, succeeding stations may be called without first restoring the step-by-step elements 44 to normal. These means include a push button 53 actuatinga lever 54 to place it in a position whereby itengages a pin 55 mounted upon the reverse side of the impulse element 15.. WVhen the lever arm 54 thus engages the pin 55 as clearly shown in dotted lines in Fig. 5, the impulseelement 15 instead of being stopped inthe normal 1 position indicated in F ig. 3 is stopped in the position indicated innFig. '5 when the spring 23 has moved upon thetooth 18 just a suflicient distance equal to approximately one-half the width of a tooth 17. In this condition it is apparent that contactis maintained through therelay 32 and current is maintained on.

the line so that the substation mechanisms remain in the position tofwhich they were moved by the impulsestransmitted from the element 15, during which time the signal of the predetermined and called station con- 1 tinues to operate. Suppose that this were,

for instance, the station A,;which responds .to a given number of mpulses and it is desired to also call station B whichresponds to a greater number of impulses and then station C which responds to a still greater number of impulses. Button 53 is actuated and the impulse element on its return is held in the. position of Fig. 5. QThenif it.

:takes, for instance, two more impulses to call station B, thefinger hold 6 is set into No. 2 of the dial and againactuated and thereverse movement of the-element15 sends the "two additional impulses and the saidelement is again held .in theposition of Fig. 5.

Then if station C is desiredwhich may, for instance, respond to three more impulses than station B, the finger hold is set in No.

3 and the dial; moved sothatjits return movement sends three impulses to call said It willibe understood of course that the dial has a normal position asshown in Fig. '1 and this is determined by a lug 56 which engages alug 57 mounted upon the jcover. A second lug 58 is provided which is designed to be engagedby the pin 7 to limit the movement to whichthe dial must be subjected in itssetting operation. As willbe apparent from the illustrations when station 1 is tobe calledand the finger hold .6 is placed in the hole 1 that the dial must move a distance equal to'the length of the tooth 18 and to a point beyond thefirst tooth 1 While I have herein shown: and particularly described the preferred embodiment of my invention, I do not mean to limit myself to the precise construction and arrangement as herein set forth, but

Having thus described my invention, What I claim as new and desire to secure by Letters'Patent is:

1. A signal sending apparatus having a current impulse controlling device, an impulse sending relay under the control thereof, and auxiliary means for close-cireuiting said relay during the movement of said device in one direction.

2. A signal sending apparatus having a current impulse controlling device, an impulse sending relay under the-control thereof, and auxiliary means for close-circuiting said relay during the movement of said device in one directionan'd opening said closed circuit during the reverse movement to permit said impulse device tointermittently operate said relay during said reverse movement. i A signal 'sendii'igapparatus having a current impulse controlling device, a relay for transmitting impulses operable thereby, and auxiliary means controlled by said de vice to operate said relay to send one pro-- longed impulse during the movement of said device in one direction.

4. A signal sending device comprising a circuit controlling current impulse controlling mechanism having means for transmitting a plurality of impulses followed by a prolonged impulse, means for moving said mechanism, and means for arresting the movement of said mechanism before the completion of the prolonged impulse aforesaid.

5. A signal sending device comprising a circuit controlling current impulse controlling mechanism having means for transmitting a plurality of impulses followed by a final impulse, means for moving said mechanism, an-d means for arresting the movement of said mechanism before the completion of the final impulse aforesaid.

6. A signal sending device comprising a current impulse controlling mechanism having means-for transmitting a plurality of signal selecting impulses and a final signal operating impulse, means for moving said mechanism, and means for arresting the movement of saidimechanism before completion. of the final impulse aforesaid.

7. A signal sending apparatus'having a movable current impulse controlling device, means for moving said device in one direction to set the same in condition to send a call fora" predetermined station, means for returning said device to its initial position whereby the selecting impulses are sent, means: whereby-said device may send a substation setting impulse during the setting movement of said device,; and a relay for O repeating all of said impulses to a line circuit.

8. A call box having a movable element, means for setting said element in position to send a call for a pre-determined station, means whereby said element transmits impulses during its reverse movement, and means whereby a prolonged impulse is transmitted by said element throughout substantially the entire period of its setting opera- 1 tion.

9'. A call box having a movable element,

means for setting said element in position I to send a call for a pre-determined station, @means whereby said element during substantially the entire period of the setting operation controls the transmission of a prolonged impulse, and means whereby said.

'element during its reverse movement controls the transmission of a plurality of substation selecting impulses.

10. A signal sending apparatus having a current impulse controlling device, a relay for transmitting impulses operable thereby, and means controlled by said device to establish a closed circuit through said. relay when said device is moving in one direction to thereby disable the relay for transmitting impulses in answer to the movement of said device.

11. A signal-sending apparatus having a movable current impulse controlling device, a relay under the control thereof and auxiliary means for short-circuiting the impulse controlling device during the movement of said'device in one direction.

12. In a signal-sending apparatus, the combination of a toothed wheel having a setting movement and a reverse movement, a relay under the control thereof and means for close circuiting said relay during substantially the setting period of said wheel and means for intermittently close circuiting said relay during substantially the reverse movement of said wheel.

13. In a selective call device, the combination of an impulse member having two movements and means dependent upon the movement of said member for sending a predetermined number of long and short impulses whereby the movement in one direction produces only long impulses, and movement in the other direction produces short impulses.

14. In a signal-sending apparatus, the combination of a toothed wheel adapted to be moved in two directions, means whereby cu'urent impulses are produced during the movement of said wheel in one direction and means for shunting said impulse-producing means during the other movei'ncnt of said wheel whereby a single long impulse is produced.

15. In a signal-sendingapparatus, the

combination of a toothed Wheel adapted to be moved in two directions, a spring contact adapted to be engaged by each tooth, a relay, a circuit for said relay, one terminal of which is constituted by the teeth of said wheel and the other by said spring, where by said circuit is closed when said spring is in engagement with a tooth and means adapted to shunt said teeth and spring during one movement of said wheel and remove said shunt during the other movement of said wheel whereby said relay is energized during substantially the Whole of one movement of said wheel and intermittently energized during the other movement thereof.

16. In a signal-sending apparatus, the combination of a toothed wheel adapted to be moved in two directions, a spring contact adapted to be engaged by each tooth, a relay,

energized during a circuit for said relay, one terminal of which is constituted by the teeth of said wheel and the other by saidspring, whereby said circuit is closed when said spring is in engagement With a tooth and means adapted to automatically shunt said teeth and spring during one movement of said wheel and remove said shunt during the othermovement of said Wheel whereby said relay is energized during substantially the whole of one movement of said wheel and intermittently the other movement thereof.

In Witness whereof, I hereunto subscribe my name this fifteenth day of August A. 1).,

HARRY O. RUGH.

'Witnesses: a

1 MAX W. ZABEL,

, M. WERMIOH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of l'atents,

Washington, D. G. 

